PSC 200 Lecture 4: Causality
7 Dec 2017
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Causality: one variable (iv) produces or brings about change in another variable (dv) Four hurdles to establish : theoretical basis a. Is there a credible theory that explains your phenomenon of interest? i: correlation. Ex: unemployment and popular uprising unemployment there are uprisings: causal order. Does the president influence the public or respond to the public: relationship between iv and dv must not be coincidental, must not have . Spurious , otherwise known as: missing variables (aka z-variables) are variables related to both iv and, missing variables make it look like there is a relationship between ou iv.
